Improvement



BLACKBURN Preserve Jar and Can.

No 205,469. Patented July 2, 1878.

05 ae/lr file 27 I HENRY BLACKBURN, OF NASHVILLE, TENNESSEE.

IMPROVEMENT. IN PRESERVE JARS AND CANS.

Specification forming part of Letters Patent No.

205.469, dated July '2, 1878; application filed April 26, 1878.

To all whom it may concern:

Be it known that I, HENRY BLACKBURN, of Nashville, in the countyotDavidson and State of Tennessee, have invented a new and usefulImprovement in Jars and Cans for the Preservation of Fruit, Fish, Meat,Vegetables, &c., which improvement is fully set forth in the followingspecification and accompanying drawing, in which Figure l is a frontview. Fig. 2 is a front view of the cap B. Fig. 3 is a sectional view.Fig. 4 is a top view of the plug D.

The object of my invention is to furnish a device by which fruit, tish,meat, vegetables, &c., can be preserved.

A is a jar or can, of usual shape. B is a cap, made of rubber or otherelastic material impervious to air. D is a plug, made of wood, cork, orother solid material.

The manner of use is as follows: Place fruit or what you wish topreserve in the jar or can, adding thereto a little water; then insertthe plug 1) and place on cap B, as shown in Fig. 3; then place the jaror can in boiling liquid until steam is seen to issue from the smallopening through 0 and E, as shown in Fig. 3,

and while steam is issuing tie a string or its equivalent around the capB at the top, and just below the bulb, which is intended to prevent thestring or its equivalent from slipping 01f. The inside of the jar or canhas been subjected to a temperature sufficient to destroy any organiclife that was therein. The steam has driven the air out of the jar orcan, and the tying of the cap prevents it from returning. When the steamis condensed, the cap B is prevented, by means of the plug D, from beingdriven Within the jar or can by the pressure of the air.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

The combination, with a preserving-vessel, of an apertured plug and anelastic cap provided with a venting-aperture, and adapted tohermetically close the jar and to retain the tying device, as and forthe purposes set forth.

HENRY BLACKBURN. Witnesses:

EDWARD TRABUE, HENRY I. MIFFLIN.

